方钢
1. 方钢：square spanner 方头扳手 | square steel 方钢 | square stool 方凳
2. 圆钢：方钢 steelbBar | 圆钢 square steel | 扁钢 steel strap,flat steel
3. 不锈钢方钢：不锈钢槽钢 groove steel | 不锈钢圆钢 round steel | 不锈钢方钢 square steel
1. square steel
1. A wind turbine requires 50 tons of steel and half a square mile of ground space.
2. It guzzles nearly half of the world's total annual cement and steel production, and produces 2 billion square meters in newly added building space each year.